Product Description

The expanded polytetrafluoroethylene (ePTFE) microporous film material is generally made of polytetrafluoroethylene resin by bidirectional stretching method, which mainly includes paste extrusion, expansion and stretching into pores and heat setting processes. The obtained microporous film material not only has excellent acid and alkali resistance, high and low temperature resistance, hydrophobic and other properties, but also has a special fibrous microporous structure, small and uniform film pore size, porosity of more than 80%, excellent mechanical properties, showing excellent waterproof, air permeability, moisture permeability and other characteristics. It is widely used in electronic products, special clothing fabrics, industrial filtration, biomedical and other fields.

Electronic waterproof ePTFE microporous film, microporous structure is stable, small and uniform pore size, with excellent liquid barrier and gas transmission characteristics, to meet the traditional sealing material waterproof requirements at the same time, but also to balance the pressure and temperature changes in the sealing chamber of electronic products with environmental changes, as a pressure balance film; In addition, while meeting the IPX8 waterproof rating, it can also achieve high-quality sound transmission and be used as an electronic sound transmission film (Mic film).

Product Technical Indicators

Subject	Unit	Method	Property
			DM3087D	DM3089D	DM3020D
Thickness	μm	GB/T 3820	10-15	10-15	4-8
Water Protection	(Φ1.6 mm)	IEC 60529	5atm, 50m 30min	5atm, 50m 30min	\
Air Permeability	ml/cm2/min@7Kpa	GB/T5453	>200	>200	＞150mm/s@125Pa
Insertion loss	dB @1kHz	/	/	＜5dB (Φ1.6 mm)	＜1dB

Packaging 

1)This product is supplied in rolls, with frame support inside, which is convenient for subsequent automated production of film.

2)The film roll is encapsulated by dust-proof bag, PE bag, and carton in sequence from the inside to the outside. The carton can be opened in normal environment, and the inner packaging must be opened in a clean environment to prevent the film from being contaminated.

Notes

1)The product must be kept in a sealed package before use; once the box is opened, it must be stored in an environment with a temperature of 23±5°C and a relative humidity of 50±5%, and use it as soon as possible.

2)Store the product in a cool and ventilated place, away from fire, heat and dust.

3)Avoid bumping and squeezing the product during use, and it is forbidden to touch the surface with hands to avoid pollution.

4)Please handle and put the product gently during transportation to prevent squeezing damage.